This project seminar aims at creating and evaluating a manual for interdisciplinary projects as part of a learning process. Working together, pedagogies and students from different disciplines assess tools and recommendations for successful collaborations while developing an app for the cathedral in Freiberg. As part of the project the students gain expertise in project management and are introduced to techniques form other disciplines which complement their work for the app. The results of the project seminar and the manual may be assigned to other interdisciplinary projects. [For the complete proceedings, see ED557311.]